I like to listen to the audio lessons on my back to and from work a couple of times each. I find it really sticks only if I listen more than once. I like all the different kinds of tests available, and the language recognition software. This is much more challenging than a class you take in college, I think because of the language recognition. You can get by with terrible pronunciation in class but not with Rocket Record on even Medium mode. The only thing I found lacking was in learning hiragana, which I think can best be taught with mnemonics. I use two free apps for that and I learned hiragana very quickly with just the mnemonic flash cards and games in the apps. I also wish the website worked better in Firefox, my preferred browser. Otherwise, I'm very happy with this purchase and would recommend it to others.